<template>
  <div class="cart">
    <!-- 导航栏 -->
    <nav-bar class="nav-bar">
      <div slot="center">购物车({{ length }})</div>
    </nav-bar>
    <!-- 商品列表 -->
    <cart-list />
    <!-- 底部汇总 -->
    <cart-bottom-bar />
  </div>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";

import CartList from "./childComps/CartList";
import CartBottomBar from "./childComps/CartBottomBar"

import { mapGetters } from "vuex";

export default {
  name: "Cart",
  // 注册组件
  components: {
    NavBar,
    CartList,
    CartBottomBar
  },
  // 计算属性
  computed: {
    // 把vuex 里面的 getters 转换成计算属性
    //  两种写法
    // ...mapGetters(["cartLength", "cartList"])
    ...mapGetters({
      length: "cartLength"
    })
  }
};
</script>

<style scoped>
.cart {
  height: 100vh;
}

.nav-bar {
  background-color: var(--color-tint);
  color: #fff;
}
</style>
